18.4mol/L过程？？C(H2SO4)=n(H2SO4)/V(溶液)=m(H2SO4)/M(h2so4)/m(溶液)/1000ρ=(1000ρ/M)*[m(h2so4)/m(溶液)]=(1000ρ/M)*98%=1000*1.84*98%/98=1.84